State Police say 38 year old Bradley Wilkinson of Winter Harbor was arrested shortly after the incident.
Avery Scott, 37 of Gouldsboro,was charged yesterday.
Officials say the case is now considered an arson investigation.
Both men were thrown into the water, when the 25 foot lobster boat called ":1st Run": burst into flames around one o’clock Wednesday morning.
Emergency crews found the men.
The boat was offshore in Bunker Harbor when it happened. It has now drifted back to shore.